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KUSA KR9 Malfunction

740 Views 20 Replies 8 Participants Last post by  Bret
Yesterday i went to the range and was using my KR9. It was working fine then on the 3rd mag it went boom in my face with a bunch of smoke. After i took that mag out cleared the round that went off in my face put a different mag in and tried to chamber 6 rounds in a row nothing would feed. looked in the Barrel and sure enough it is blocked or ruined? not sure reaching out to you guys for input.
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Out of battery discharge. I also had one with my gun. It blew out the side/base of the cartridge case, and the gas pressure destroyed the magazine, but otherwise did no damage to the gun. It sent the projectile halfway down the barrel, where it stopped. Somehow, in the excitement, I managed to pull the trigger AGAIN and now had not one, but TWO bullets stuck in the barrel.

I managed to keep all my fingers and parts of my face, and had to get creative to get those jammed projectiles out of there. I think I drilled out the one closest to the muzzle, then ramrodded the other one.

These guns are by now pretty famous for doing OOBD (also known as a "Kaboom"). Something to do with the firing pin or part of the bolt being able to hit the primer before the round gets completely chambered.

KUSA is (I think) somehow addressing the issue with some sort of a fix, but I dont know the details. This condition has been widely reported & talked about on other gun forums.

Despite this, I absolutely LOVE my KR-9. It's one of the guns I would never get rid of, even with this problem.
wow ok thank you just happy i have my eyes and fingers.
1st order of business in any event such as this is to: STOP. clear it. break it down. Inspect everything...not jam in more rounds
OPs very lucky to not be in the ER and the firearm in a permanently disassembled condition...

Just take it to a gun smith Op, you're (probably/definately) outside your pay grade.
got it make more money and take it to a gunsmith.:rolleyes:
I did not see the gun was under still under warranty- return it to MFG .
i got it from a local FFL not directly from the company 1 year ago not sure about warranty...
While I was typing my response, Mudburner posted his. What he said is exactly spot on from start to finish. Do not send it to a gunsmith. That will only give KUSA the opportunity to void the warranty. Call KUSA and send it back to them for repair. Whatever the cause, this is a dangerous condition that need to be addressed by the manufacturer. They may have a fix or they may need more information like this to figure it out. Keep us informed of what happens. I'm crossing my fingers that mine keeps working fine. Is your KR9 the 16" barrel version or an SBR?
this was my16 inch KR9... my KP9 has 800+ rounds through it and no issues.
I have 2 KR9s that I bought secondhand; I contacted them about the warranty regarding the firing pins and they put me on the queue in Feb. Didn't have to provide reciepts or anything. I sent both bolts to KUSA on 3/6 and they're currently on their way back to me with the revised firing pin.
awesome thank you most helpful reply.
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